<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>timeline记录内存变化</title>
</head>
<body>
    <button id="btn">Add</button>
    <script>
        const arr = []
        function test (){
            for(let i = 0 ; i < 100000; i++){
                document.body.appendChild(document.createElement('p'))
            }
            arr.push(new Array(100000).join('-'))
        }
        document.getElementById('btn').addEventListener('click', test)
    </script>
</body>
</html>